<template>
  <div class="home" style="margin: 10px">
    <!--  功能区域  -->
    <div style="margin: 10px 0">
      <el-button type="primary" @click="add">新增</el-button>
      <el-button type="primary">导入</el-button>
      <el-button type="primary">导出</el-button>
    </div>

    <!--  搜索区域  -->
    <div style="margin: 10px 0">
      <el-input v-model="search" placeholder="请输入关键字" style="width: 40%" clearable></el-input>
      <el-button type="primary" style="margin-left: 5px" @click="load">查询</el-button>
    </div>

    <!--  表格区域  -->
    <el-table
        v-loading="loading"
        :data="tableData"
        border
        stripe
        style="width: 100%"

    >
      <!--   定义表头部分   -->
      <el-table-column prop="id" label="ID" sortable/>
      <el-table-column prop="username" label="用户名"/>
      <el-table-column prop="nickName" label="昵称"/>
      <el-table-column prop="age" label="年龄"/>
      <el-table-column prop="sex" label="性别"/>
      <el-table-column prop="address" label="地址"/>
      <el-table-column label="角色">
        <template #default="scope">
          <span v-if="scope.row.role === '1'">管理员</span>
          <span v-if="scope.row.role === '2'">普通用户</span>
        </template>
      </el-table-column>
      <el-table-column fixed="right" label="操作" width="280">
        <template #default = "scope">
          <el-button size="mini" type="success" plain @click="showBooks(scope.row)">查看图书列表</el-button>
          <el-button  size="mini" type="primary" plain @click="handleEdit(scope.row)">编辑</el-button>
          <el-popconfirm confirm-button-text="确认" @confirm ="handleDelete(scope.row.id)" title="确定要删除吗？">
            <template #reference>
              <el-button size="mini" type="danger">删除</el-button>
            </template>
          </el-popconfirm>
        </template>
      </el-table-column>
    </el-table>

    <div style="margin: 10px 0">

    <!--  分页显示部分  -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="currentPage"
                     :page-sizes="[5,10,20]" :page-size="pageSize" background layout="total, sizes, prev, pager, next, jumper"
                     :total="total"/>


    <!--   图书列表弹窗部分   -->
      <el-dialog title="用户拥有的图书列表" v-model="bookVis" width="30%">
        <el-table :data="bookList" stripe border>
          <el-table-column prop="id" label="ID"></el-table-column>
          <el-table-column prop="name" label="名称"></el-table-column>
          <el-table-column prop="price" label="价格"></el-table-column>
        </el-table>
      </el-dialog>


      <!--   新增按钮的弹窗   -->
      <el-dialog v-model="dialogVisible" icon="Edit" title="编辑" width="30%">
        <el-form :model="form" label-width="120px">
          <el-form-item label="用户名">
            <el-input v-model="form.username" />
          </el-form-item>
          <el-form-item label="昵称">
            <el-input v-model="form.nickName" />
          </el-form-item>
          <el-form-item label="年龄">
            <el-input v-model="form.age" />
          </el-form-item>
          <el-form-item label="性别">
            <el-radio v-model="form.sex" label="男">男</el-radio>
            <el-radio v-model="form.sex" label="女">女</el-radio>
            <el-radio v-model="form.sex" label="未知">未知</el-radio>
          </el-form-item>
          <el-form-item label="地址">
            <el-input type="textarea" v-model="form.address" />
          </el-form-item>
        </el-form>
        <template #footer>
      <span class="dialog-footer">
        <el-button @click="dialogVisible = false">取消</el-button>
        <el-button type="primary" @click="save">确定</el-button>
      </span>
        </template>
      </el-dialog>
    </div>
  </div>
</template>


<script>
import request from "@/utils/request";

export default {
  name: 'User',
  components: {

  },
  data() {
    return {
      loading: true,
      form: {},
      search: '',
      currentPage: 1,
      pageSize: 10,
      bookVis: false,
      total: 0,
      dialogVisible: false,
      // 列表中的数据
      tableData: [],
      bookList:[],
    }
  },
  created() {
    this.load()
  },
  methods: {

    //展示图书列表
    showBooks(row){
      request.get("/user/bookList/" + row.id).then(res=>{
        this.loading = false
        // console.log(res.data)
        this.bookList = res.data
      })
      this.bookVis = true
    },


    //编辑
    handleEdit(row) {
      this.form = JSON.parse(JSON.stringify(row))
      this.dialogVisible = true
    },


    //保存
    save() {
      if (this.form.id){ //更新
        request.put("/user",this.form).then(res =>{
          if (res.code === '0'){
            //更新成功时弹窗给出成功信息
            this.$message({
              type: "success",
              message: "更新成功"
            })
          } else {
            this.$message({
              type: "error",
              message: res.msg
            })
          }
          this.load() // 刷新表格的数据
          this.dialogVisible = false //关闭弹窗
        })
      } else{ // 新增
        request.post("/user",this.form).then(res => {
          if (res.code === '0'){
            //新增成功时弹窗给出成功信息
            this.$message({
              type: "success",
              message: "新增成功"
            })
          } else {
            this.$message({
              type: "error",
              message: res.msg
            })
          }
          this.load() // 刷新表格的数据
          this.dialogVisible = false //关闭弹窗
        })
      }
    },


    //删除
    handleDelete(id){
      console.log(id)
      request.delete("/user/" + id).then(res => {
        if (res.code === '0'){
          //更新成功时弹窗给出成功信息
          this.$message({
            type: "success",
            message: "删除成功"
          })
        } else {
          this.$message({
            type: "error",
            message: res.msg
          })
        }
        this.load() // 刷新表格的数据
      })
    },


    handleSizeChange(pageSize) {
      // 改变每页个数
      this.pageSize = pageSize
      this.load()
    },


    handleCurrentChange(currentPage) {
      // 改变当前页数
      this.currentPage = currentPage
      this.load()
    },


    add() {
      // 打开弹窗添加用户
      this.dialogVisible = true
      // 每次打开弹窗输入后要清空否则影响下次使用
      this.form = {}
    },


    // 刷新数据
    load(){
      this.loading = true
      request.get("/user",{
        params:{
          currentPage:this.currentPage,
          pageSize:this.pageSize,
          search:this.search
        }
      }).then(res=>{
        this.loading = false
        // 后台返回的数据赋值给表格
        this.tableData = res.data.records
        // 后台返回的数据总条数
        this.total = res.data.total
      })
    }

  }

}
</script>

